Good quality Watch stem is made of stainless steel, durable of good quality, as the connector between the watch face and the strap. Easy to install, ideal for repairing watches. 18 kinds of size Our Watch spring bars include 18 kinds of size 8-25mm, the spring bar diameter is 1.5mm almost. 20 pins of each size, with 77mm watch band pin remover. About These watch stems are packaged in a plastic box 18 compartments, organized in order, easy to store and identify 18 different sizes, not messy. Large pplication The watch accessories are perfect for replacing the watch band, watch repair.The repair tool can easily fit the watch band, convenient to repair. Quick tip These watch stems are ideal for your friends / family who need it. watch straps with a width of 8 25 mm, please Ensure the size before purchasing.